Electrical receptacle



R. B. BENJAMIN.

ELECTRICALy RECEPTACLE. APPLICATION FILI-:D MAY 29. 1917.

LOl. Patented Oct. 12, 1920.

UNITE!) stares Parleur oFFice.

.REUBEN B. BENJAMIN, GFv CHICAGO, ILLINOIS, AISSIGNOR, 'IO BENJAMINELECTRIC MANUFACTURING COMPANY, MOIS.

OF CHICAGO, ILLINOIS, A CORPORATION OF ILLI- ELECTRICAL RECEPTACLE.

specification of Letters Patent.

Patented Oct. 12, 1920.

Application led May 29, 1917. Serial No. 171,626.

T'o all whom t may concern:

Be it known that I, REUBEN B. BENJAMIN, a citizen of the United States,residing at Chicago, in the countyof Cook and State of Illinois, haveinvented new and useful lmprovements in Electrical Receptacles, of4

which the following is a full, clear, concise, and exact description,reference being had to the accompanying drawing, forming a part of `thisspecification.v

My linvention relates to electrical vreceptacles.

One of the objects of my invention is to provide an improved electricalreceptacle in which the leading-in wires are permanently secured to theterminals of the receptacle, which will be simple and compact inconstruction and cheap to manufacture. Further objects will appear fromthe detailed description to follow and from the appended claim.

In the drawings, in which one embodiment of my invention is shown-Figure 1 is a side elevation of a receptacle embodying my invention;

Fig. 2 is an axial section on the line 2-2 of Fig. 3;

Fig. 3 is an axial section on the lme 3-3 of F 1g. 2; f

Fig. 4 is a bottom view of Fig. 1;

Fig. 5 is a top view of Fig. 1;

Fig. 6 is a top view of Fig. 1 with the casing removed; and

Fig. 7 is a detail sectional view of a bindinv-terminal on the line 7 7of Fig.

eferring to the drawings in detallfthe receptacle shown comprises asheet-metal shell contact 10, a center contact 11, an insulating base 12'for supporting the shell and center contacts, and a sheet-metal casing13 for housing the base 12 and associated parts:l

The insulating base 12 comprises a main circular body portion ofsubstantially the same diameter as the shell Contact located within theshell contact and having a shoulder 14 for engagement with theinwardlyextending flange 15 of the shell contact 10. The base 12 isassembled with respect to the shell contact 10 by slipping it in placethrough the outer threaded portion 16 of the shell contact. The shellContact 1()l and base 12 are held in assembledrelation with respect toeach other and to the casing 18 by means of a pair of hollow rivets 17which extend through registering openings in the base 12 and casing 13and are riveted to the base and casing as indicated at 18 and 19. Theupper outer end of these hollow rivets are closed, as indicated at 20,thus preventing foreign substances from getting into the receptacle.

An insulating sleeve 21 of fiber or other suitable material is locatedbetween the shell contact 10 and the skirt portion 22 of the casing, andan insulating cap 23 is located .between the insulating base 12 and thecap ,portion 24 of the casing 13. The inwardlyextending flange 25 of thesleeve 21, the inwardly-extending flange 15 of the shell 10, and theouter edge 26 of the cap 23 are clamped and held in place between theshoulder 14- ot the insulating base and the cap portion 24. of thecasing 13, by means of the securing rivets 17. An insulating sleeve 27is provided for the neck portion 28 of the casing to prevent a shortcircuit in case the insulation on the Aleading-in wires 29 should becomeworn. The center contact 11 is secured to the insulating base.12 bymeans of a hollow rivet 30 which extends through the registeringopenings in the contact 11 and insulating base 12. VVThis rivet 30 isopen at its upper end to receive' the bared end of one of the leading-inwires 29, whereby this hollow rivet also serves as a binding-terminal.For connecting the other leading-in wire 29 to the shell contact, theshell contact is formed with a member 31 extending inwardly from theflange portion 15 and provided with upstanding ears 32 (Figs. 6 and 7)which arebent down over the bared end of the leading-in wire 29 to forman electrical connection. rlhe bared ends of the leading-in wires 29 maybe soldered to their respective binding-terminals, the r1vet 30 servingas a soldering well in making this connection.

ln assembling the parts, the operation of riveting the rivets 17 to thecasing 13 is the last operation to be performed,the wires 29 being firstpermanently connected to their respective binding terminals.

What I claim as new and desire to secure by Letters Patent of the UnitedStates is:

An electrical receptacle comprising a cupshaped metal housing, a liningof sheet insulating material, fitting snugly inside said cup-shapedmetal housing, a threaded shell,

l0 openings parallel to the axis of said threaded shell contact forsecuring said base, threaded shell contact and insulating lining inplace in said housing7 said reduced eX-v tending portion of saidinsulating base' being recessed, and Wiring terminals for the feed Wiresfor the receptacle contacts located in said recesses.

In witness whereof, I have hereunto subscribed my name.

REUBEN B. BENJAMIN.

